DEV: Only enable our self hosted runners on the discourse/discourse repo (#29024)

Our self hosted runners does not work for forked repositories.

.github/workflows/labeler.yml

@@ -10,7 +10,7 @@ permissions:
 jobs:
   triage:
     if: github.actor != 'discourse-translator-bot'
-    runs-on: debian-12
+    runs-on: ubuntu-latest
 
     steps:
       - uses: actions/labeler@v5

.github/workflows/licenses.yml

@@ -17,7 +17,7 @@ jobs:
   build:
     if: github.event_name == 'pull_request' || github.repository != 'discourse/discourse-private-mirror'
     name: run
-    runs-on: debian-12
+    runs-on: ${{ (github.repository != 'discourse/discourse' && 'ubuntu-latest') || 'debian-12' }}
     container: discourse/discourse_test:slim
     timeout-minutes: 10
 

.github/workflows/linting.yml

@@ -17,7 +17,7 @@ jobs:
   build:
     if: github.event_name == 'pull_request' || github.repository != 'discourse/discourse-private-mirror'
     name: run
-    runs-on: debian-12
+    runs-on: ${{ (github.repository != 'discourse/discourse' && 'ubuntu-latest') || 'debian-12' }}
     container: discourse/discourse_test:slim
     timeout-minutes: 30
 

.github/workflows/migration-tests.yml

@@ -24,7 +24,7 @@ jobs:
   tests:
     if: github.event_name == 'pull_request' || github.repository != 'discourse/discourse-private-mirror'
     name: Tests with Ruby ${{ matrix.ruby }}
-    runs-on: debian-12
+    runs-on: ${{ (github.repository != 'discourse/discourse' && 'ubuntu-latest') || 'debian-12' }}
     container: discourse/discourse_test:slim
     timeout-minutes: 20
 
@@ -126,11 +126,11 @@ jobs:
         if: steps.app-cache.outputs.cache-hit != 'true'
         run: rm -rf tmp/app-cache/uploads && cp -r public/uploads tmp/app-cache/uploads
 
-#      - name: Check core database drift
+      #      - name: Check core database drift
-#        run: |
+      #        run: |
-#          mkdir /tmp/intermediate_db
+      #          mkdir /tmp/intermediate_db
-#          ./migrations/scripts/schema_generator /tmp/intermediate_db/base_migration.sql
+      #          ./migrations/scripts/schema_generator /tmp/intermediate_db/base_migration.sql
-#          diff -u migrations/common/intermediate_db_schema/000_base_schema.sql /tmp/intermediate_db/base_migration.sql
+      #          diff -u migrations/common/intermediate_db_schema/000_base_schema.sql /tmp/intermediate_db/base_migration.sql
 
       - name: RSpec
         run: bin/rspec --default-path migrations/spec

.github/workflows/release-notes.yml

@@ -4,14 +4,14 @@ on:
   workflow_dispatch:
     inputs:
       from:
-        description: 'Starting ref (exclusive). Can be a tag, branch or commit ref. `latest-release` refers to the last beta version bump.'
+        description: "Starting ref (exclusive). Can be a tag, branch or commit ref. `latest-release` refers to the last beta version bump."
         required: true
-        default: 'latest-release'
+        default: "latest-release"
         type: string
       to:
-        description: 'Ending ref (inclusive). Can be a tag, branch or commit ref. `HEAD` refers to the most recent commit.'
+        description: "Ending ref (inclusive). Can be a tag, branch or commit ref. `HEAD` refers to the most recent commit."
         required: true
-        default: 'HEAD'
+        default: "HEAD"
         type: string
 
 permissions:
@@ -20,7 +20,7 @@ permissions:
 jobs:
   build:
     name: run
-    runs-on: debian-12
+    runs-on: ${{ (github.repository != 'discourse/discourse' && 'ubuntu-latest') || 'debian-12' }}
     container: discourse/discourse_test:slim
     timeout-minutes: 10
     env:

.github/workflows/stale-pr-closer.yml

@@ -1,7 +1,7 @@
-name: 'Close stale PRs'
+name: "Close stale PRs"
 on:
   schedule:
-    - cron: '30 1 * * *'
+    - cron: "30 1 * * *"
   workflow_dispatch:
 
 permissions:
@@ -9,11 +9,11 @@ permissions:
 
 jobs:
   stale:
-    runs-on: debian-12
+    runs-on: ${{ (github.repository != 'discourse/discourse' && 'ubuntu-latest') || 'debian-12' }}
     steps:
       - uses: actions/stale@v9
         with:
           days-before-stale: 60
           days-before-close: 14
-          stale-pr-message: 'This pull request has been automatically marked as stale because it has been open for 60 days with no activity. To keep it open, remove the stale tag, push code, or add a comment. Otherwise, it will be closed in 14 days.'
+          stale-pr-message: "This pull request has been automatically marked as stale because it has been open for 60 days with no activity. To keep it open, remove the stale tag, push code, or add a comment. Otherwise, it will be closed in 14 days."
           exempt-pr-labels: dependencies

.github/workflows/tests.yml

@@ -29,7 +29,7 @@ jobs:
   build:
     if: github.event_name == 'pull_request' || github.repository != 'discourse/discourse-private-mirror'
     name: ${{ matrix.target }} ${{ matrix.build_type }} # Update fetch-job-id step if changing this
-    runs-on: debian-12
+    runs-on: ${{ (github.repository != 'discourse/discourse' && 'ubuntu-22.04-8core') || 'debian-12' }}
     container: discourse/discourse_test:slim${{ (matrix.build_type == 'frontend' || matrix.build_type == 'system') && '-browsers' || '' }}
     timeout-minutes: 20
 
@@ -366,7 +366,7 @@ jobs:
   core_frontend_tests:
     if: github.event_name == 'pull_request' || github.repository != 'discourse/discourse-private-mirror'
     name: core frontend (${{ matrix.browser }})
-    runs-on: debian-12
+    runs-on: ${{ (github.repository != 'discourse/discourse' && 'ubuntu-22.04-8core') || 'debian-12' }}
     container:
       image: discourse/discourse_test:slim-browsers
       options: --user discourse